Re: CircusSquirrel, I have a question?
I'm so sorry I didn't see this earlier! I've taken the premedication before the contrast because of a family member allergy, but it was at my request, so basically it's not a big deal if you don't take it, but the pills are pretty benign in those small doses so you may as well take them. The warm sensation from the dye only lasts maybe 30 seconds. It's not even really a burning, just a sense of being warm, then it goes away. As long as you're expecting it, it's not bad. If noone told you that would happen, you'd be like "What is this?!" A reaction would entail something like hives and itching, but if you take the Benadryl beforehand you're unlikely to have a problem. In the rare event that you did, they could give you some more right there to stop the reaction. Take care and let us know what happens. Sorry again that I didn't see this earlier!